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Robust High-performance Dye-sensitized Solar Cells Based on Ionic Liquid-sulfolane Composite Electrolytes.

Type of publication Peer-reviewed
Publikationsform Original article (peer-reviewed)
Author Lau Genevieve P S, Décoppet Jean-David, Moehl Thomas, Zakeeruddin Shaik M, Grätzel Michael, Dyson Paul J,
Project Turning functionalised ionic liquids into functional materials for catalysis and other applications
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Original article (peer-reviewed)

Journal Scientific reports
Volume (Issue) 5
Page(s) 18158 - 18158
Title of proceedings Scientific reports
DOI 10.1038/srep18158


Novel ionic liquid-sulfolane composite electrolytes based on the 1,2,3-triazolium family of ionic liquids were developed for dye-sensitized solar cells. The best performing device exhibited a short-circuit current density of 13.4 mA cm(-2), an open-circuit voltage of 713 mV and a fill factor of 0.65, corresponding to an overall power conversion efficiency (PCE) of 6.3%. In addition, these devices are highly stable, retaining more than 95% of the initial device PCE after 1000 hours of light- and heat-stress. These composite electrolytes show great promise for industrial application as they allow for a 14.5% improvement in PCE, compared to the solvent-free eutectic ionic liquid electrolyte system, without compromising device stability.